package com.changgou.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.changgou.common.exception.ExceptionCast;
import com.changgou.common.model.response.goods.GoodsCode;
import com.changgou.common.util.IdWorker;
import com.changgou.goods.dao.*;
import com.changgou.goods.pojo.*;
import com.changgou.goods.service.SpuService;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service
public class SpuServiceImpl implements SpuService {

    @Autowired
    private SpuMapper spuMapper;

    @Autowired
    private SkuMapper skuMapper;

    @Autowired
    private IdWorker idWorker;

    @Autowired
    private BrandMapper brandMapper;

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private CategoryBrandMapper categoryBrandMapper;

    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Goods findGoodsById(String id){
        Spu spu = spuMapper.selectByPrimaryKey( id );

        Example example = new Example( Sku.class );
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo( "spuId",spu.getId() );
        List<Sku> skuList = skuMapper.selectByExample( example );

        Goods goods = new Goods();
        goods.setSpu( spu );
        goods.setSkuList( skuList );

        return goods;
    }

    /**
     * 根据ID查询
     *
     * @param id
     * @return
     */
    @Override
    public Spu findSpuById(String id) {
        return spuMapper.selectByPrimaryKey( id );
    }


    /**
     * 保存商品 SPU+SKU列表
     * @param goods 商品组合实体类
     */
    @Override
    @Transactional
    public void add(Goods goods){
        //1.添加spu
        Spu spu = goods.getSpu();
        //设置分布式id
        long spuId = idWorker.nextId();
        spu.setId( String.valueOf( spuId ) );
        //设置删除状态. 未删除0
        spu.setIsDelete( "0" );
        //上架状态   未上架 0
        spu.setIsMarketable( "0" );
        //审核状态   未审核 0
        spu.setIsEnableSpec( "0" );
        //设置启用规格  默认是启用的
        spu.setIsEnableSpec( "1" );

        spuMapper.insertSelective( spu );

        //保存sku集合到数据库
        saveSkuList(goods);
    }

    //保存sku列表
    private void saveSkuList(Goods goods) {
        //获取spu对象
        Spu spu = goods.getSpu();
        //当前日期
        Date date = new Date();
        //获取品牌对象
        Brand brand = brandMapper.selectByPrimaryKey( spu.getBrandId() );
        //获取第三级 分类对象
        Category category = categoryMapper.selectByPrimaryKey( spu.getCategory3Id() );
        //设置品牌与分类的关联关系
        //查询关联表
        CategoryBrand categoryBrand = new CategoryBrand();
        categoryBrand.setBrandId( spu.getBrandId() );
        categoryBrand.setCategoryId( spu.getCategory3Id() );
        int count = categoryBrandMapper.selectCount( categoryBrand );
        if(count==0){
            //说明还没有关联关系
            categoryBrandMapper.insert( categoryBrand );
        }

        //获取sku集合对象
        List<Sku> skuList = goods.getSkuList();
        if(skuList!=null && skuList.size()>0){
            for (Sku sku : skuList) {
                //设置sku主键
                sku.setId( String.valueOf( idWorker.nextId() ) );
                //设置sku规格（规格为必选项，可以不用设置默认值）
                if(sku.getSpec()==null || "".equals( sku.getSpec() )){
                    sku.setSpec( "{}" );
                }
                //设置sku名字-->商品(spuName)名称+规格(spec)
                String name = spu.getName();
                //将规格json字符串转换成Map
                Map<String,String> specMap = JSON.parseObject( sku.getSpec(), Map.class );
                if (specMap!=null && specMap.size()>0){
                    for (String value : specMap.values()) {
                        name += " "+value;
                    }
                }
                sku.setName( name );//名称
                sku.setSpuId( spu.getId() );//设置spu Id
                sku.setCreateTime( date );
                sku.setUpdateTime( date );
                sku.setBrandName( brand.getName() );
                sku.setCategoryId( category.getId() );
                sku.setCategoryName( category.getName() );

                //插入sku表数据
                skuMapper.insertSelective( sku );
            }
        }
    }


    /**
     * 修改
     * @param goods
     */
    @Override
    public void update(Goods goods){
        //修改spu
        Spu spu = goods.getSpu();
        System.out.println(spu.getName());
        int i = spuMapper.updateByPrimaryKey( spu );
        System.out.println(i);

        //删除原有sku列表
        Example example = new Example( Sku.class );
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo( "spuId",spu.getId() );
        skuMapper.deleteByExample( example );

        saveSkuList( goods );//保存sku列表
    }

    /**
     * 删除 -- 逻辑删除
     * @param id
     */
    @Override
    public void delete(String id){
        Spu spu = spuMapper.selectByPrimaryKey( id );
        //判断商品是否下架，未下架不能删除
        if("1".equals( spu.getIsMarketable() )){
            ExceptionCast.cast( GoodsCode.GOODS_SPU_Marketable_ERROR );
        }
        //设置为已删除状态 1
        spu.setIsDelete( "1" );
        //设置为未审核 0
        spu.setStatus( "0" );

        spuMapper.updateByPrimaryKeySelective( spu );
    }

    /***
     * 删除 -- 物理删除
     * @param id
     */
    @Override
    public void realDelete(String id) {
        Spu spu = spuMapper.selectByPrimaryKey( id );
        //检查商品是否处于删除状态
        if("0".equals( spu.getIsDelete() )){
            ExceptionCast.cast( GoodsCode.GOODS_SPU_REALDEL_ERROR );
        }
        spuMapper.deleteByPrimaryKey( id );
    }

    /***
     * 恢复数据  将回收站的数据还原
     * @param id
     */
    @Override
    public void restore(String id) {
        Spu spu = spuMapper.selectByPrimaryKey( id );
        //检查是否删除
        if("0".equals( spu.getIsDelete() )){
            ExceptionCast.cast( GoodsCode.GOODS_SPU_RESTORE_ERROR );
        }
        spu.setIsDelete( "0" );//未删除
        spu.setStatus( "0" );//未审核
        spuMapper.updateByPrimaryKeySelective( spu );
    }


    /**
     * 条件查询
     * @param searchMap
     * @return
     */
    @Override
    public List<Spu> findList(Map<String, Object> searchMap){
        Example example = createExample(searchMap);
        return spuMapper.selectByExample(example);
    }

    /**
     * 分页查询
     * @param page
     * @param size
     * @return
     */
    @Override
    public Page<Spu> findPage(int page, int size){
        PageHelper.startPage(page,size);
        return (Page<Spu>)spuMapper.selectAll();
    }

    /**
     * 条件+分页查询
     * @param searchMap 查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public Page<Spu> findPage(Map<String,Object> searchMap, int page, int size){
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        return (Page<Spu>)spuMapper.selectByExample(example);
    }

    /**
     * 审核
     * @return
    * */
    @Override
    @Transactional
    public void audit(String id) {
        Spu spu = spuMapper.selectByPrimaryKey( id );
        //判断商品是否存在
        if(spu==null){
            ExceptionCast.cast( GoodsCode.GOODS_SPU_EXIST_ERROR );
        }
        //判断商品是否删除
        if("1".equals( spu.getIsDelete() )){
            ExceptionCast.cast( GoodsCode.GOODS_SPU_DEL_ERROR );
        }
        //不处于删除状态,修改审核状态为1,上下架状态为1
        spu.setStatus( "1" );
        spu.setIsMarketable( "1" );

        //执行修改操作
        spuMapper.updateByPrimaryKeySelective( spu );
    }

    /**
 * 下架商品
 * @return
 * */
        @Override
        @Transactional
        public void pull(String id) {
            Spu spu = spuMapper.selectByPrimaryKey( id );
            //判断商品是否存在
            if(spu==null){
                ExceptionCast.cast( GoodsCode.GOODS_SPU_EXIST_ERROR );
            }
            //判断商品是否删除
            if("1".equals( spu.getIsDelete() )){
                ExceptionCast.cast( GoodsCode.GOODS_SPU_DEL_ERROR );
            }
            //商品处于未删除状态的话,则修改上下架状态为已下架(0)
            spu.setIsMarketable( "0" );

            spuMapper.updateByPrimaryKeySelective( spu );

        }

    /**
     * 上架商品
     * @return
     * */
    @Override
    @Transactional
    public void put(String id) {
        Spu spu = spuMapper.selectByPrimaryKey( id );
        //判断商品是否通过审核，为审核不能上架
        if("0".equals( spu.getStatus() )){
            ExceptionCast.cast( GoodsCode.GOODS_SPU_AUDIT_ERROR);
        }
        //商品已审核，将上架状态改为已上架 1
        spu.setIsMarketable( "1" );

        spuMapper.updateByPrimaryKeySelective( spu );
    }

    /**
     * 构建查询对象
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 主键
            if(searchMap.get("id")!=null && !"".equals(searchMap.get("id"))){
                criteria.andEqualTo("id",searchMap.get("id"));
           	}
            // 货号
            if(searchMap.get("sn")!=null && !"".equals(searchMap.get("sn"))){
                criteria.andEqualTo("sn",searchMap.get("sn"));
           	}
            // SPU名
            if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
                criteria.andLike("name","%"+searchMap.get("name")+"%");
           	}
            // 副标题
            if(searchMap.get("caption")!=null && !"".equals(searchMap.get("caption"))){
                criteria.andLike("caption","%"+searchMap.get("caption")+"%");
           	}
            // 图片
            if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
                criteria.andLike("image","%"+searchMap.get("image")+"%");
           	}
            // 图片列表
            if(searchMap.get("images")!=null && !"".equals(searchMap.get("images"))){
                criteria.andLike("images","%"+searchMap.get("images")+"%");
           	}
            // 售后服务
            if(searchMap.get("saleService")!=null && !"".equals(searchMap.get("saleService"))){
                criteria.andLike("saleService","%"+searchMap.get("saleService")+"%");
           	}
            // 介绍
            if(searchMap.get("introduction")!=null && !"".equals(searchMap.get("introduction"))){
                criteria.andLike("introduction","%"+searchMap.get("introduction")+"%");
           	}
            // 规格列表
            if(searchMap.get("specItems")!=null && !"".equals(searchMap.get("specItems"))){
                criteria.andLike("specItems","%"+searchMap.get("specItems")+"%");
           	}
            // 参数列表
            if(searchMap.get("paraItems")!=null && !"".equals(searchMap.get("paraItems"))){
                criteria.andLike("paraItems","%"+searchMap.get("paraItems")+"%");
           	}
            // 是否上架
            if(searchMap.get("isMarketable")!=null && !"".equals(searchMap.get("isMarketable"))){
                criteria.andEqualTo("isMarketable",searchMap.get("isMarketable"));
           	}
            // 是否启用规格
            if(searchMap.get("isEnableSpec")!=null && !"".equals(searchMap.get("isEnableSpec"))){
                criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
           	}
            // 是否删除
            if(searchMap.get("isDelete")!=null && !"".equals(searchMap.get("isDelete"))){
                criteria.andEqualTo("isDelete",searchMap.get("isDelete"));
           	}
            // 审核状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
           	}

            // 品牌ID
            if(searchMap.get("brandId")!=null ){
                criteria.andEqualTo("brandId",searchMap.get("brandId"));
            }
            // 一级分类
            if(searchMap.get("category1Id")!=null ){
                criteria.andEqualTo("category1Id",searchMap.get("category1Id"));
            }
            // 二级分类
            if(searchMap.get("category2Id")!=null ){
                criteria.andEqualTo("category2Id",searchMap.get("category2Id"));
            }
            // 三级分类
            if(searchMap.get("category3Id")!=null ){
                criteria.andEqualTo("category3Id",searchMap.get("category3Id"));
            }
            // 模板ID
            if(searchMap.get("templateId")!=null ){
                criteria.andEqualTo("templateId",searchMap.get("templateId"));
            }
            // 运费模板id
            if(searchMap.get("freightId")!=null ){
                criteria.andEqualTo("freightId",searchMap.get("freightId"));
            }
            // 销量
            if(searchMap.get("saleNum")!=null ){
                criteria.andEqualTo("saleNum",searchMap.get("saleNum"));
            }
            // 评论数
            if(searchMap.get("commentNum")!=null ){
                criteria.andEqualTo("commentNum",searchMap.get("commentNum"));
            }

        }
        return example;
    }

}
